linux-kernel - [PATCH v2] PCI: rockchip: Use 64-bit mask on MSI 64-bit PCI address

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Date:   Mon,  3 Jul 2023 10:58:45 +0200
From:   Rick Wertenbroek <rick.wertenbroek@...il.com>
To:     alberto.dassatti@...g-vd.ch
Cc:     dlemoal@...nel.org, Rick Wertenbroek <rick.wertenbroek@...il.com>,
        Dan Carpenter <dan.carpenter@...aro.org>,
        stable@...r.kernel.org, Shawn Lin <shawn.lin@...k-chips.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Rob Herring <robh@...nel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Heiko Stuebner <heiko@...ech.de>, linux-pci@...r.kernel.org,
        linux-rockchip@...ts.infradead.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH v2] PCI: rockchip: Use 64-bit mask on MSI 64-bit PCI address

A 32-bit mask was used on the 64-bit PCI address used for mapping MSIs.
This would result in the upper 32 bits being unintentionally zeroed and
MSIs getting mapped to incorrect PCI addresses if the address had any
of the upper bits set.

Replace 32-bit mask by appropriate 64-bit mask.

Fixes: dc73ed0f1b8b ("PCI: rockchip: Fix window mapping and address translation for endpoint")
Reported-by: Dan Carpenter <dan.carpenter@...aro.org>
Closes: https://lore.kernel.org/linux-pci/8d19e5b7-8fa0-44a4-90e2-9bb06f5eb694@moroto.mountain/
Signed-off-by: Rick Wertenbroek <rick.wertenbroek@...il.com>
Cc: stable@...r.kernel.org
---
 drivers/pci/controller/pcie-rockchip.h | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/pci/controller/pcie-rockchip.h b/drivers/pci/controller/pcie-rockchip.h
index fe0333778fd9..627d08b34827 100644
--- a/drivers/pci/controller/pcie-rockchip.h
+++ b/drivers/pci/controller/pcie-rockchip.h
@@ -158,7 +158,9 @@
 #define PCIE_RC_CONFIG_THP_CAP		(PCIE_RC_CONFIG_BASE + 0x274)
 #define   PCIE_RC_CONFIG_THP_CAP_NEXT_MASK	GENMASK(31, 20)
 
-#define PCIE_ADDR_MASK			0xffffff00
+#define MAX_AXI_IB_ROOTPORT_REGION_NUM		3
+#define MIN_AXI_ADDR_BITS_PASSED		8
+#define PCIE_ADDR_MASK			GENMASK(63, MIN_AXI_ADDR_BITS_PASSED)
 #define PCIE_CORE_AXI_CONF_BASE		0xc00000
 #define PCIE_CORE_OB_REGION_ADDR0	(PCIE_CORE_AXI_CONF_BASE + 0x0)
 #define   PCIE_CORE_OB_REGION_ADDR0_NUM_BITS	0x3f
@@ -185,8 +187,6 @@
 #define AXI_WRAPPER_TYPE1_CFG			0xb
 #define AXI_WRAPPER_NOR_MSG			0xc
 
-#define MAX_AXI_IB_ROOTPORT_REGION_NUM		3
-#define MIN_AXI_ADDR_BITS_PASSED		8
 #define PCIE_RC_SEND_PME_OFF			0x11960
 #define ROCKCHIP_VENDOR_ID			0x1d87
 #define PCIE_LINK_IS_L2(x) \
-- 
2.25.1